Drag-bucket.



Maasai.

To aZZaowf/n t may conce-m:

Be it known that I, WILLIAM Gr. VVooD, a citizen of the United States, residing. at Sacramento, in the county of Sacramento and State of California, have invented new and useful Improvements in Drag-Buckets,

\ of which the following is a specification..

The present invention relates to improvements in drag buckets used in excavating machines. Great diiiiculty isvoften experienced in dropping out'of the bucket the load 'contained therein, especially if it is of clayey or sticky material.

rl"he object of the present inventionis to provide a means whereby, when the bucket is tilted for the purpose of dumping its load, the load maybe positively discharged from the bucket.

In the accompanying drawing, Figure 1 is a broken side view of a' drag bucket con structed in accordance with my invention, iii-the 'position in whichit is being dragged along thesurface of the ground; Fig. 2is a similar view of the bucket in the position in which it is tilted for .the purpose of dumping; Fig. 3 is a cross sectional view of the bucket.

Referring to the drawing, 1 indicates la drag bucket having the usual teeth 2, drag chains 3 and bail-L1 by wlii-ch the drag bucket can be suspended. To the inner square ends of the pivot bolts 6 oi' the bail l are, secured, so as to turn therewith, crank arms 7, to the outer ends of which are pivotally secured ends of links S, the other ends of which are pivotally secured, -as -sliowii at 9, .to side. plates 11 located closely adjacent to the sides 12 `of the body of tliebucket, said side plates 11l being riveted, as 'shown at 1% to a'movable back 11 located to normally rest against thei'back 15 of the bucket, between which back and the side plates 11 are riveted longitudiii-al slide bars 16, between which slide bars and the bottom 17 of-the bucket are Vsecuied slidable cross bars 1S, the ends of which slidebetween the sides 12 and guides 19, riveted upon said sides. The cross bars and the front edge of the. curved movable back are formed with. beveled 4edges 24, which shear od from the bottom 17 of the bucket any material thatl may be adhering thereto. To said longitudinal bars 16 are secured lower ends of oblique brace bars 20, the upper ends of which are secured to the movable back 1i. The result of this construction is that, when tlie'bucket is being wrilnraivre.' woon, or s'Acmiiiiniv'ro,'oenrronrira f DRAG-BUCKET.

Specication of LettersvPateiit. Ptcviittll Sepilnll, l'llfw Application 1edApri124,.1916. Serial Nc. 93,156. n

dragged forward by the pull chains, the false or movable back 14 is in its rearinost position next the back 15 of the bucket. But, when the bucket is suspended from the bail, so that it extends in an approximately vertical direction, as shown in Fig. 2, then, by reason of the movement of .the crank arms 7 with relation to the bucket, the movable back 14:, longitudinal, and transverse slide bars 16, 18, and oblique braces 20 move forward in the bucket, thereby shearing off any material that might be adhering to the bottom of the bucket, so that the load readily drops therefrom.l

I claim 1. In combination with a drag bucket, means for moving the same in a longitudinal direction, and means for suspending the same vertically, bars movable in close proximity to the bottom ofthe bucket, and an operative connection between said bars and one of the aforesaid means, whereby said bars are so moved when the bucket moves relatively to said aforesaid means.

2. In combination with a drag bucket, means for moving the saine in alongitudinal direction, and means for suspending the same vertically, longitudinal and transverse p the same vertically, a back, longitudinal and transverse bars movable in close proximity to the bottom of the bucket, and an operative connection between said bars and one of the aforesaid means, whereby said bars and back are s o moved when the bucket moves relatively to said aforesaid means.

el. In combination with a d rag bucket, means formoving the saine in a longitudinal direction, and means for suspending the4 saine vertically, longitudinal bars movable longitudinally in close proximity to the bot toni of the bucket, transverse bars secured to said longitudinal bars, guides on the sides of the bucket' for said bars, a back conf iiected to said longitudinal bars, braces connecting said back and longitudinal bars, and an operative connectionbetween said bars and one of thel aforesaid r'ie'ans, Where- "said bars are so moved when the bucket nected to .said longitudinal bars .and guidS 10 lInovesrelatively to said aforesaid means. for said transverse bars QOImQQtQd t0 thi! 5. In a drag bucket, a bail upon which sides ofthe bucket, and an Operative C011- 'said bucket is suspended, pivot bolts connection between said bars and @ne 0f the,

5 ymeeting said .bucket to said bail7 crank arms aforesaid means, whereby said bars and connected Ato said pivots, links connected 'to' back are so moved When-'the bucket 'moves 15 4said crank arms, a movable back connected relatively to said aforesaid means.

to said links, longitudinal slide barsconnected to said back, and transverse bars con- WILLIAM G. WOOD. 

